Natalie Portman's strange accent in "Jackie" was spot on, according to linguists

Well, that settles it."Merely reading that line doesn’t do justice to the voice Portman adopted for the role. If you’re not aware of how Jackie Kennedy spoke, listening to Portman’s Jackie is like the tingle of soda in your throat. It often feels familiar, but in certain spots it pops and jumps. The way she lops off the end of “bitter,” the funny hop in “artifact,” the way she rolls through “remembered” — it’s like she’s invented her own unique way of speaking English""But Portman’s delivery is accurate in the way it captures the former first lady’s affect. And that might be the most impressive element of her Oscar-nominated performance." "Merely reading that line doesn’t do justice to the voice Portman adopted for the role. If you’re not aware of how Jackie Kennedy spoke, listening to Portman’s Jackie is like the tingle of soda in your throat. It often feels familiar, but in certain spots it pops and jumps. The way she lops off the end of “bitter,” the funny hop in “artifact,” the way she rolls through “remembered” — it’s like she’s invented her own unique way of speaking English

"When Portman was asked how she learned Kennedy’s accent, the actress told the Los Angeles Times that she looked up every interview with Kennedy that she could find on YouTube and watched the first lady’s 1962 White House Tour over and over."

"Natalie Portman’s performance as Jaqueline Bouvier Kennedy is masterful. If you thought there was nothing else that could be said about that fateful day when JFK was shot and killed in Dallas then you were wrong. Director Pablo Larraín (Neruda) dissects the incident through Jackie’s own eyes. The film takes place in the hours following JFK’s death as the First Lady tries to comprehend the magnitude of the event. Through the use of finely crafted flashbacks, Larrain strips the cinematic conventions that come with bio-pics and gets to the core of Jackie’s psyche at the time. Portman’s performance is a high-wire act of intrigue. She never fully reveals the exact reasons for some of Jackie’s behavior and though we can never truly know if there was manipulation involved with her grief, this is hinted at. In a way Larrain and Portman are playing with the audience with an immaculate mix of enigma, grief and cynicism. It’s an artfully crafted thing, this “Jackie.”